Artificial fry breeding method for epinephelus coioides

The invention relates to a technology of slanted grouper and a cultivation method, which is applied to the field of artificial fry cultivation of slanted grouper, can solve the problems of low survival rate of fry and low quality of fry, etc., so as to improve the ability of leukocyte production and enhance non-specificity. Immunity, improve anti-stress ability

Inactive Publication Date: 2017-09-19
舟山市普陀兴海养殖优质种苗选育研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the survival rate of the fish fry cultivated by the above-mentioned method is not high, and the fry quality is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The invention discloses a method for cultivating artificial seedlings of grouper, which includes laying eggs and hatching, cultivating larvae, grading fry and cultivating juveniles.

[0018] The spawning and hatching steps are to put the selected mature broodstock into the spawning pool according to the ratio of female:male 2:1, 33 fish per pool, and the daily water change is 5 times; The banded grouper mates and spawns, and the spawning rate is high. The broodstock naturally produces floating eggs, and then the fertilized eggs are collected by the egg collection tank; the separated fertilized eggs are placed in a small cage net and hatched by micro-flowing water and weak aeration. Simulating the conditions of the oblique-banded grouper in the natural environment, the hatching rate of fertilized eggs is high.

[0019] The larval fish culture step is when the larvae are released, inject 70% sand-filtered seawater into the cultivation tank, the larvae open at H3, and sta...

Embodiment 2

[0025] The invention discloses a method for cultivating artificial seedlings of grouper, which includes laying eggs and hatching, cultivating larvae, grading fry and cultivating juveniles.

[0026] The spawning and hatching steps are to put the selected mature broodstock into the spawning pool according to the ratio of female:male: 2:1.4, 35 fish per pool, and the daily water change is 6 times; the above-mentioned environment is suitable for mature obliques The banded grouper mates and spawns, and the spawning rate is high. The broodstock naturally produces floating eggs, and then the fertilized eggs are collected by the egg collection tank; the separated fertilized eggs are placed in a small cage net and hatched by micro-flowing water and weak aeration. Simulating the conditions of the oblique-banded grouper in the natural environment, the hatching rate of fertilized eggs is high.

[0027]The larval fish culture step is when the larvae are released, inject 70% sand-filtered ...

Embodiment 3

[0033] 1) Spawning and hatching: The gonad maturation season of spawning and hatching grouper is from March to July. We generally put the selected mature broodstock into a 60t circular spawning pond to spawn at the end of March, according to the ratio of female:male: 2:1.2. There are 34 fish in each pond, and the daily water change is 5 times. The broodstock naturally produces floating eggs, and then the fertilized eggs are collected by the egg collection tank. The separated fertilized eggs are put into a small box net (75cmx75emx60cm) and hatched by micro-flowing water and weak aeration. The hatching density is about 500,000 grains / box;

[0034] 2) Cultivation of larvae: For larvae cultivation, 30,000 larvae are placed in each cubic meter of nursery water. When the water temperature is 26°C, the larvae begin to metamorphose into juveniles after 30 days of cultivation. When putting the larvae, inject sand filter seawater in the cultivation pond, accounting for 70% of the vo...

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Abstract

The invention discloses an artificial fry breeding method for epinephelus coioides. The breeding process includes the steps of roe laying and hatching, larva breeding, fry grading, and juvenile fish breeding. The method has the advantages that according to the development characteristics of feeding organs of epinephelus coioides larvae, a matched bait line for feeding oyster fertilized eggs, rotifers and artemia is formulated, the method is scientific and reasonable, and the growth speed of the larvae is high; the natural growth environment of the epinephelus coioides is simulated, the environment suitable for hatching of fertilized eggs of the epinephelus coioides and growth of the larvae is created, and the survival rate of the artificially bred epinephelus coioides is increased; in the larvae breeding stage, a chlorella solution containing active polypeptides is injected into pond water, so that the leukopoiesis capacity of the larvae is improved, the non-specific immunity of the larvae is enhanced, and the anti-stress capability of the larvae is improved.

Description

technical field [0001] The invention relates to the technical field of fish fry cultivation, in particular to an artificial fry cultivation method of grouper. Background technique [0002] The banded grouper is one of the famous and valuable marine fish in the world, especially in Southeast Asia. The banded grouper is a warm-water fish and likes to inhabit places with darker light such as coral reefs and rocky reefs. Adult fish often inhabit sea areas with rocky reefs and sandy mud on the bottom, while juvenile fish often move around the tidal zone. The banded grouper is a carnivorous fish, [0003] It swims fast and has a fierce temperament. Under natural conditions, it mainly feeds on fish and shrimp, and the juvenile fish have the habit of killing each other. Its meat is delicious and nutritious, and is deeply loved by consumers. The sea area suitable for grouper farming in southern my country is vast. Grouper farming has huge development potential and favorable conditi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A01K61/17
CPCA01K61/10A01K61/17Y02A40/81
Inventor 施晓峰
Owner 舟山市普陀兴海养殖优质种苗选育研究所
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